Stopping means for looms.



No. 798,964. PATENTED JULY 4, 1905.

E, & STIMPSON.

STQPPING MEAN$ FDR LOOM$n APPLIUA'I'ION FILED PEB.18,1905.

PATENTBD JULY 4, 1905.

E S. STIMPSON. STOPPING MEANS FORLOOMSD APPLICATION FILED FEB. 16,1905.

2 SHEBTS-SHBET 2.

Patented July t, 1905.

ld irirntfia.

lGll'WAltl') ti. WlllrlFtlUN, OF ll'UPlCllAlilC, ll l/ iltlAUllUtl l'lltl, Atlf lll'll lillt 'ltl l llltAPlQlt COMPANY, OF lllhlllllllli llll l, lilr itlt latlllllt ll l'ldtt,

Tl UN OF MA l N l 11....0 e lli l SJEECJEFICATIUN forming part of Letters Patent No. 793.96%, dated July (t, 1905.

Application filed February 13, 1905. Serial No. 246.236-

jio n l/ II /b07171 if iii/my con/err,-

lle it known that l, llnwnnn S. tl'ri'nrsrm', a citizen of the United tiltates, and a resident of llopedale, county of Worcester, State 01 l rlas sachusetts, have invented an l mprovement in t ltopping Means for Looms, 01. which the following description, in cormection with the accoin 'mnying drawings, is a specification, like nunu'srals on the drawings representing like parts.

This invention has for its object the pro duction of means to ellect automatically the stoppage ot' a loom when a ])l6(l(-Bll01ll1ll'l0(l length or out of cloth has been woven and taken up by the take-up mechanism, means being also provided to indicate or signal to the weaver that the loom has stopped for that particular reason.

lit is common practice to place one weaver in charge of a number of looms, particularly when the latter are provided with automatic warp stop -motion and filling-replenishing mechanisms, the number of looms in a group running from sixteen upward.

By providing means to stop a loom automatically when a predetermined length of cloth has been woven the weaver can give her general attention to all of the looms in her charge, knowing that no loom can weave more than the desired cut without stopping. To facilitate still further the work of the weaver, the signal or indicator is provided to indicate when a loom stops that the stoppage is due to the fact that the desired length of cloth has been woven.

'llhe various novel features of my invention will be fully described in the subjoined specilication, and particularlypointed out in the :iollowing claims.

Figure 1 is a front elevation, centrally broken out, of a sullicient portion 01 a loom to be understood with one embodiment of my invention applied thereto. Fig. 2 is a transverse section thereof on the line 9 Fig. 1,

iookiliig toward the right, a portion of the wai'pstop'motion mechanism being shown. Fig. 3 is a detail of one part of the device which eiliocts the actuation of the stopping instrumcutality when the out has been woven. Fig. is an inner side elevation of the clothmeasuring means shown at the right, lfiig. 1, the nearer side oi the casing being removed. Fig. 5 is an enlarged sectional detail thereof on the line 5 5, Fig. 11-. Fig. 6 is a perspeo tive face view 01 the measuring membe and a portion of the attached actuating-ratchet, and Fig. 7 is a perspective view detached ol? the yielding abutment,which cooperates with the measuring member in a manner to be described.

The breast-beam 1, shipper 2, the cloth-roll shatt 3., on which the cloth is wound as taken up, the take-up or sand roll 4:, and the mechanism for operating the latter, may be and are all oi well-known construction and need not be described in detail, the take-up mechanism being shown as substantially that forming the subject-matter of United tltates Patent No. 610,636, granted to J. H. Northrop tleptember 13, 18925.

In the present embodiment of my invention one end of the take-upa-oll journal 5 is provided with an eccentric stud 6, Figs. 1 and 2, which enters loosely an eye 7, Fig. 1-, of a depending elongated pawl 8, which enters the upturned neck 9 of a circular casing 10, secured to the loom side and provided with a removable cover 11. .l.he pawl cooperates with a ratchet 12, rotatably mounted on a stud 13, secured to the back of the casing, a spring-controlled plunger let, Fig. i, bearing on the pawl and maintaining it in engagement with the ratchet, while a suitable detent-pawl .15 prevents retrograde movement of the ratchet.

As shown in Fig. 5, a washer 16 is interposed between the ratchet and the back of the casing, and secured to or forming a part of the ratchet on its opposite face a measuring member is provided, shown as a disk 17, having a peripheral notch 18, having its rear side flared to form a cam l.) for a purpose to be described. A spring-seat 20 and an abutmentstop 21 are formed on the face of the measuring member, as clearly shown in Fig. 6, the stop having oppositely-Ireveled faces The periphery of the member 17 is slabbed 5 off or cut away at 24: adjacent the front or leading side of the notch 18. (Best shown in Fig. L.) A sleeve like hub 25 is slipped loosely onto the stud 13 and against the face of the disk 17, surrounding a bushing 26, Fig. 5, against which bears a spring 27, coiled around the stud and held in place by anut28, pinned or otherwise secured to the stud, the spring acting through the bushing to form a friction-detent for the measuring member 17 and prevent too free movement thereof. The cover 11 of the casing is bulged out at 11 to provide room for the stud and the hub 25.

Referring now to Fig. 7, the hub 25 is provided with a radially extended segmental abutment 29, having a non-radial face 30, the curved end of the abutment corresponding with the curvature of the disk 17. (See Fig. i.) A lug 31 on the hub is socketed to receive one end of a spring 32, the other end resting in the spring-seat 20 on the disk, as shown in Fig. 4c, the spring normally holding the lug 31 against the stop-face 22. At such time the face of the abutment is substantially parallel to the leading side of the notch 18, the cam side 19 being covered by the abutment. (See dotted lines, Fig. a.) As the take-up roll it rotates the pawl S will be reciprocated, and by cooperation with the ratchet 12 the measuring member 17 will be slowly rotated step by step, each revolution of the roll 4: imparting one complete stroke to the pawl. Outside of the case, and on the front portion thereof, is mounted a horizontal stud 33, on which is fulcrumed a three-armed lever comprising an upturned indicator and stop-motion controlling arm 3%, a depending arm 35 pressed outward by the action of a spring 36, Fig. at, and an inturncd arm or tripping-lever 37 projecting into the casing. This tripping-lever extends parallel and adjacent the face of the measuring member 17 and at its free end is provided with a lateral toe 38, which normally rests on and travels upon the periphery of said member, the lever being located in the plane of the abutment 29. The spring 36 keeps the toe pressed against the periphery of the member 17 and snaps it into the notch 18 when the latter in the rotation of the said member 17 is brought beneath the toe.

Referring to Fig. 2, a sufficient portion of a well-known warp-stop-motion mechanism is shown including two oppositely-vibratable feelers 39, mounted on rock-shafts etO 11, connected by segmental gears, a feeler-cam 4:2, and a tappet-cam 43, both mounted on the cam-shaft etet of the loom, a follower 44., and connections between it and the rock-shaft 10 to normally vibrate the feelers. A link 4:5 carries the follower and a hunter so, the link being connected with a knock-off arm 4:7, fulcrunled on the loom-frame and having a camslot as, through which the lower end of the shipper 2 extends. Engagement of a feeler with a released detector L9 in its cooperating bank acts to operatively position the hunter 4:6 with relation to the tappet-cam 43 to move the link 45 longitudinally, and thereby rock the knock-off arm 47 and release the shipper, effecting stoppage of the loom. Herein I effect stoppage of the loom through such instrumentality when the predetermined length or cut of cloth has been woven. To this end the upper end of arm 34 has secured to it a laterally'extended rod 50, pivotally connected at one end with a rearwardly-extended link 51, provided at its rear end with a plate 52, having a cam-slot 53, through which one of the feeler rocleshafts, as &1, passes. Figs.

2 and 3. The plate 52 projects under the lower edge of the adjacent feeler and normally is positioned as shown in Fig. 2, so that the feeler can rock freely. hen the arm 3% is swung to the rear by the cloth-measuring means, as will be explained, the link 51 moves the plate 52 upward and rearward into the position shown in Fig. 3, so that its upper edge 5a engages the lower edge of the feeler and arrests its inward or feelingmovement just as if a dropped detector had caused such arrest. As a result the stopping instrumentality is caused to operate, releasing the shipper and bringing the loom to rest. The warp stopmotion is substantially that shown in United States patent to Sawyer, No. 763,119, to which reference may be had. A stud 55, Fig. 1, secured to the front of the loomframe, at the right-hand side, has mounted upon it a hub 56, provided with a depending arm 57, slotted at 58 to receive the outer end of the rod 50, said hub having a second upturned arm 59 extended a suitable distance above the breast-beam and carrying a plate or target 60, Fig. 2, constituting a visual signal or indicator. Under normal conditions the indicator is held in the position shown; but when the loom is stopped through the operation of the cloth-measuring means the indicator is moved positively into dotted-line position, Fig. 2, indicating to the weaver that the out has been woven and that the loom has been stopped for that reason.

The operation of the cloth-measuring means will now be described, and referring to Fig. 4: the parts are shown in position as just about to operate. hen the forward movement of the ratchet 12 has brought the toe 38 of the tripping-lever onto the cut-away part 24: of the measuring member 17, the free end of said lever is thereby lowered into the path of movement of the face 30 of the abutment 29, and as rotation of the ratchet continues the abutment will be stopped, compressing the spring 32 as the disk 17 continues its forward movement. hen such forward movement has been sufiicient to carry the toe past the leading side of the notch 18, the spring 33 being the stronger immedlately expands and "res, out

throws the toe down into said notch, thereby rocking the trip rin r-lever and the upturned rigidly-connecterl arm 3a, the latter movii'ig riarward in the direction of the arrow 65, Fig. 4t. liluch movemei'it operates throunh the rod 50 to operatitmly position the camplati as shown in his. 3, whereby the operation ol the stomiing ii'istrunumtality is el ieeted, and at the name time the arm 57 is swung inward, throwing out the indira'ttor (3i) into indicating position, the THOVOITWHlJ ol' the indie: tor being positively elli'eeted by the connections hereinbelore described between it and the upturned arm Ell. lt will be understood that one complete revolution of the ratchet 12 will eerrespmld to a cut of cloth coi'itainiun a predetermined number of yards, although by setting forward the measurii'ig member 17, as will be flKplYllHGll, a less n umber of yards can be woven and the loom stopped when such length has been completed. t hipposing now that the too 38 is in the notch l ll, the loom having come to a stop, when the out has been removed and the loom in readiiless to be started the weaver will take hold of the upper and of the arm 3. and pull it forward, thereby lifting the tripping-lever 3?, removil'lg its tee from the notch18, and instantly the spring 32 will throw Forward th '2 abutment into its normal position, (shown in Fig. elg) but such forward movement will carry the periphery of the abi'ltment underneath the trimung-lever. 'lhe loom can now be started, and it will not be stopped, so Far as the measuring means is concerned, until one complete revolution of the ratchet 12 has been ellected. rVere it not For the described action of the abutment moving under the tripping-lever it will be manifest that the w mver would have to hold down th) arm 3%. until the loom had run long enough to carry the notch it; past the toe o'l the trippingdever; but the abutment by the automatic action d BSClillOll operates as 2 setting and retaining device. lit for any reason the weaver desires to turn over the take-up mechanism by or through rotation ol the usual piclzwheel without interferiim with or operating any other instrnmentality of the loom, this can be done and without manually disengaging the trippirm-lever from the notch of the measuring member. tluch rotation of the takeup mechanism it continued far enough will cause the too 38 to ride up on the cam side 19 of the notch and onto the periphery of the al'mtmci'it, the latter thereupon instantly returning to its normal position with relation to the measuring member, 'llhe face 23 of the stop 21 limits the movement ol the abutment when operated against its controlling-spring l 't' it is desired to weave shorter length o'l cloth than is provided by a complete revolution of the measuring member 11?, it :an be accomplislual by the weaver turning forward the ratchet to shorten the lmgth ol the pcriphery ol the dish I? over which the toe 38 travels belore ctnnii'lg opposite to the notch. This, lu'nvever, could only be done by removinn'lhe rover ol the casingll) and would therefore indicate to the overseer any unwarranted attei'npt of the weaver to shorten the length ol the cut. The indie: tor is positively connected with and at all times nude absolute control of the cl(a1li-i11eas'uring means and will only be moved into imlicatinc; position when the stoppage ol the loom is ellected by or through the operation ol' the said measuring means.

irly invention is not restricted to the precise construction and arrangement herein shown and described, as the same may be medilied or rearranged in various particulars by those skilled in the art without departing from the spirit and scope ot my invention.

lllavim, fully described my inventioi'i, what l claim as new, and desire to secure by lJOliliO/l'li :latent, is

'l. in a loom, in combination tal e-np mechanism, including a take-up roll and cloth measuring means, i no] lll line a measn ring member, a pawl and ratchet to rotate it, an eccentric stud on one of the takeup-roll join-mils, the pawl being mounted on and reciprocated by said stud, and a trip iinn device governor l by and normal ly ma in tained inoperative by the me: surinemember, rotation oi the latter corresponding to a predetermined length ol cloth llLl-IQH up operating the tripping device, the latter when (merated being adapted to ellect the actuation of a loom-stem)ing instrumeutality.

2. .ln a loom, in combination, take-up mech' anism, (JlOlili'HlOilSlllllIt! means, including a re tatablc, notched disk, stcp-by-step actuating connections between it and the take-up mechan ism, a tripping device normally maintained inoperative by the dish and rendered operrti ve by entrance into the notch, operation of such tripping device being adapted to e'tlect the actuation of a stepping i1istrumentality, and means to withdrmv aiiitomatieally said tripping device from the notch by continued rotation ol the disk.

3. In a loom, in cmnbinatirm, tahe-up mech anism, cloth-m iasuring m Bans, including a rotat-able disk no tched step by step by or tlnou gh the talce-up mechanism and provided with a anipheral notch, a yielding abutment rotatable with the disk ruliacent the notch, a triping-lever having a toe to travel normally on theperiphcry ol the dish and enter the notch, the end of the lever en, ga trin;r and pressing the abutment back as the toe enters the hotch to rock the lever, and means operated by or through such rocking ol the lever to ellect the stoppage of the loom, manual withd 'awal of the tee from the notch releasing the abutment and permittirag; it to move forward under the lever and hold it in imrperative position.

TOO

l. In a loom, in combination, take-up mechanism, cloth -ineasnring means, inchiding a disk rotatable step by step by said mechanism and provided with a peripheral notch having a cam side, a trimiing-lever having a toe to normally travel upon the periphery of the disk and enter the notch, entrance of the toe into the notch rocking said lever. and means operated thereby to effect automatically the stoppage of the loom, forward rotation ot the disk thereafter causing the lever-toe to travel up the cam side and out of the notch.

5. In a loom, take-up mechanism, clothmeasuring means actuated thereby, including a rotating disk having a peripheral notch, a tripping-lever having a toe to normally travel on the periphery of the disk, and a yielding resetting device movable with the disk, combined with a stopping instrumentality for the loom the operation \vhereot' is effected by movement of the lever when its toe enters the notch of the disk, manual Withdrawal of the toe from the notch permitting the resetting device to pass under and retain the lever in normal position.

6. In a loom, take-up mechanism, clothmeasuring means actuated thereby, including a rotating disk having a peripheral notch, a spring-controlled tripping-lever having a toe l r l l to travel normally on the periphery of the disk, the periphery thereof being cut away adjacent the leading side 0? the notch, and a segmental, spring-controlled abutment rotatable with the disk adjacent the notch, combined with a stopping instrumentality for the loom actuated by or through said lever when its too enters the notch, the cut-away portion of the disk permitting the end of the lever to engage and press back the abutment as the toe enters the notch, subsequent return of the lever to normal position permitting theabutment to pass under the lever and hold the toe out of the notch when the loom is started.

'7. In a loom, a stopping instrumentality adapted to be operated by or through a \varp fault, take-up mechanism, a visual indicator, controlling means therefor and positively connected therewith and governed by the take up mechanism, to move the indicator into indicating position and efiect the operation of the stopping iustrumentality when a predetermined length of cloth has been taken up, and operating connections between the controlling means and the stopping instrumentality.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

EIHVARD S. STIMPSON.

Vfitnesses:

(hymen OTIS ,Dnarnn, ERNEST lV. -Wooi) 

